Use Electronic chokes instead of the traditional induction types. They save up to 40% electricity.

Make sure that there is at least 6 inches separation between the refrigerator and the wall behind it. It helps the air circulate and hence the heat dissipation from the coils.

Use an electronic fan regulator v/s the traditional rheostat type which converts some of it's energy to heat to perform the function of a resistor(hence the heating of the regulator when you run the fan on low speeds for too long).

Last but not the least -- please turn off the lights, fans, etc.... when leaving the room.